单词	euhedral
释义	euhedral /juːˈhiːdr(ə)l / adjective Geology (Of a mineral crystal in a rock) bounded by faces corresponding to its regular crystal form, not constrained by adjacent minerals.During crystallization of the derivative granite, minor secondary zircon grew around the older cores, resulting in euhedral crystal forms of all the grains.... Some biotite crystals form perfectly euhedral plates, others show a reaction rim rich in opaque granules towards the surrounding microfelsitic base. Titanite occurs as up to 2 cm long, dark brown, euhedral crystals in textural equilibrium with the other minerals.
随便看	empowerment empress empressement empressite empress tree emprise emprize emprosthotonic emprosthotonos emprosthotonus Empson, Sir William empt emptain emptily emptin emptiness empting emption emptor empty empty calories empty cell empty chair empty-eyed empty-handed

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